git.oblomov.eu Git - wine/blob - dlls/urlmon/urlmon_main.c

   1 /*
   2  * UrlMon
   3  *
   4  * Copyright (c) 2000 Patrik Stridvall
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "urlmon_main.h"
  24
  25 #include "winreg.h"
  26
  27 #define NO_SHLWAPI_REG
  28 #include "shlwapi.h"
  29 #include "advpub.h"
  30
  31 #include "wine/debug.h"
  32
  33 #include "urlmon.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  36
  37 LONG URLMON_refCount = 0;
  38
  39 static HMODULE hCabinet = NULL;
  40 static DWORD urlmon_tls = TLS_OUT_OF_INDEXES;
  41
  42 static void init_session(BOOL);
  43
  44 static struct list tls_list = LIST_INIT(tls_list);
  45
  46 static CRITICAL_SECTION tls_cs;
  47 static CRITICAL_SECTION_DEBUG tls_cs_dbg =
  48 {
  49     0, 0, &tls_cs,
  50     { &tls_cs_dbg.ProcessLocksList, &tls_cs_dbg.ProcessLocksList },
  51       0, 0, { (DWORD_PTR)(__FILE__ ": tls") }
  52 };
  53
  54 static CRITICAL_SECTION tls_cs = { &tls_cs_dbg, -1, 0, 0, 0, 0 };
  55
  56 tls_data_t *get_tls_data(void)
  57 {
  58     tls_data_t *data;
  59
  60     if(urlmon_tls == TLS_OUT_OF_INDEXES) {
  61         DWORD tls = TlsAlloc();
  62         if(tls == TLS_OUT_OF_INDEXES)
  63             return NULL;
  64
  65         tls = InterlockedCompareExchange((LONG*)&urlmon_tls, tls, TLS_OUT_OF_INDEXES);
  66         if(tls != urlmon_tls)
  67             TlsFree(tls);
  68     }
  69
  70     data = TlsGetValue(urlmon_tls);
  71     if(!data) {
  72         data = heap_alloc_zero(sizeof(tls_data_t));
  73         if(!data)
  74             return NULL;
  75
  76         EnterCriticalSection(&tls_cs);
  77         list_add_tail(&tls_list, &data->entry);
  78         LeaveCriticalSection(&tls_cs);
  79
  80         TlsSetValue(urlmon_tls, data);
  81     }
  82
  83     return data;
  84 }
  85
  86 static void free_tls_list(void)
  87 {
  88     tls_data_t *data;
  89
  90     if(urlmon_tls == TLS_OUT_OF_INDEXES)
  91         return;
  92
  93     while(!list_empty(&tls_list)) {
  94         data = LIST_ENTRY(list_head(&tls_list), tls_data_t, entry);
  95         list_remove(&data->entry);
  96         heap_free(data);
  97     }
  98
  99     TlsFree(urlmon_tls);
 100 }
 101
 102 static void detach_thread(void)
 103 {
 104     tls_data_t *data;
 105
 106     if(urlmon_tls == TLS_OUT_OF_INDEXES)
 107         return;
 108
 109     data = TlsGetValue(urlmon_tls);
 110     if(!data)
 111         return;
 112
 113     EnterCriticalSection(&tls_cs);
 114     list_remove(&data->entry);
 115     LeaveCriticalSection(&tls_cs);
 116
 117     if(data->notif_hwnd) {
 118         WARN("notif_hwnd not destroyed\n");
 119         DestroyWindow(data->notif_hwnd);
 120     }
 121
 122     heap_free(data);
 123 }
 124
 125 static void process_detach(void)
 126 {
 127     HINTERNET internet_session;
 128
 129     internet_session = get_internet_session(NULL);
 130     if(internet_session)
 131         InternetCloseHandle(internet_session);
 132
 133     if (hCabinet)
 134         FreeLibrary(hCabinet);
 135
 136     init_session(FALSE);
 137     free_session();
 138     free_tls_list();
 139 }
 140
 141 /***********************************************************************
 142  *              DllMain (URLMON.init)
 143  */
 144 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
 145 {
 146     TRACE("%p 0x%x %p\n", hinstDLL, fdwReason, fImpLoad);
 147
 148     URLMON_DllMain( hinstDLL, fdwReason, fImpLoad );
 149
 150     switch(fdwReason) {
 151     case DLL_PROCESS_ATTACH:
 152         init_session(TRUE);
 153         break;
 154
 155     case DLL_PROCESS_DETACH:
 156         process_detach();
 157         break;
 158
 159     case DLL_THREAD_DETACH:
 160         detach_thread();
 161         break;
 162     }
 163     return TRUE;
 164 }
 165
 166
 167 /***********************************************************************
 168  *              DllInstall (URLMON.@)
 169  */
 170 HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
 171 {
 172   FIXME("(%s, %s): stub\n", bInstall?"TRUE":"FALSE",
 173         debugstr_w(cmdline));
 174
 175   return S_OK;
 176 }
 177
 178 /***********************************************************************
 179  *              DllCanUnloadNow (URLMON.@)
 180  */
 181 HRESULT WINAPI DllCanUnloadNow(void)
 182 {
 183     return URLMON_refCount != 0 ? S_FALSE : S_OK;
 184 }
 185
 186
 187
 188 /******************************************************************************
 189  * Urlmon ClassFactory
 190  */
 191 typedef struct {
 192     const IClassFactoryVtbl *lpClassFactoryVtbl;
 193
 194     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
 195 } ClassFactory;
 196
 197 #define CLASSFACTORY(x)  ((IClassFactory*)  &(x)->lpClassFactoryVtbl)
 198
 199 static HRESULT WINAPI CF_QueryInterface(IClassFactory *iface, REFIID riid, LPVOID *ppv)
 200 {
 201     *ppv = NULL;
 202
 203     if(IsEqualGUID(riid, &IID_IUnknown)) {
 204         TRACE("(%p)->(IID_IUnknown %p)\n", iface, ppv);
 205         *ppv = iface;
 206     }else if(IsEqualGUID(riid, &IID_IClassFactory)) {
 207         TRACE("(%p)->(IID_IClassFactory %p)\n", iface, ppv);
 208         *ppv = iface;
 209     }
 210
 211     if(*ppv) {
 212         IUnknown_AddRef((IUnknown*)*ppv);
 213         return S_OK;
 214     }
 215
 216     WARN("(%p)->(%s,%p),not found\n", iface, debugstr_guid(riid), ppv);
 217     return E_NOINTERFACE;
 218 }
 219
 220 static ULONG WINAPI CF_AddRef(IClassFactory *iface)
 221 {
 222     URLMON_LockModule();
 223     return 2;
 224 }
 225
 226 static ULONG WINAPI CF_Release(IClassFactory *iface)
 227 {
 228     URLMON_UnlockModule();
 229     return 1;
 230 }
 231
 232
 233 static HRESULT WINAPI CF_CreateInstance(IClassFactory *iface, IUnknown *pOuter,
 234                                         REFIID riid, LPVOID *ppobj)
 235 {
 236     ClassFactory *This = (ClassFactory*)iface;
 237     HRESULT hres;
 238     LPUNKNOWN punk;
 239
 240     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 241
 242     *ppobj = NULL;
 243     if(SUCCEEDED(hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk))) {
 244         hres = IUnknown_QueryInterface(punk, riid, ppobj);
 245         IUnknown_Release(punk);
 246     }
 247     return hres;
 248 }
 249
 250 static HRESULT WINAPI CF_LockServer(LPCLASSFACTORY iface,BOOL dolock)
 251 {
 252     TRACE("(%d)\n", dolock);
 253
 254     if (dolock)
 255            URLMON_LockModule();
 256     else
 257            URLMON_UnlockModule();
 258
 259     return S_OK;
 260 }
 261
 262 static const IClassFactoryVtbl ClassFactoryVtbl =
 263 {
 264     CF_QueryInterface,
 265     CF_AddRef,
 266     CF_Release,
 267     CF_CreateInstance,
 268     CF_LockServer
 269 };
 270
 271 static const ClassFactory FileProtocolCF =
 272     { &ClassFactoryVtbl, FileProtocol_Construct};
 273 static const ClassFactory FtpProtocolCF =
 274     { &ClassFactoryVtbl, FtpProtocol_Construct};
 275 static const ClassFactory GopherProtocolCF =
 276     { &ClassFactoryVtbl, GopherProtocol_Construct};
 277 static const ClassFactory HttpProtocolCF =
 278     { &ClassFactoryVtbl, HttpProtocol_Construct};
 279 static const ClassFactory HttpSProtocolCF =
 280     { &ClassFactoryVtbl, HttpSProtocol_Construct};
 281 static const ClassFactory MkProtocolCF =
 282     { &ClassFactoryVtbl, MkProtocol_Construct};
 283 static const ClassFactory SecurityManagerCF =
 284     { &ClassFactoryVtbl, SecManagerImpl_Construct};
 285 static const ClassFactory ZoneManagerCF =
 286     { &ClassFactoryVtbl, ZoneMgrImpl_Construct};
 287 static const ClassFactory StdURLMonikerCF =
 288     { &ClassFactoryVtbl, StdURLMoniker_Construct};
 289 static const ClassFactory MimeFilterCF =
 290     { &ClassFactoryVtbl, MimeFilter_Construct};
 291
 292 struct object_creation_info
 293 {
 294     const CLSID *clsid;
 295     IClassFactory *cf;
 296     LPCWSTR protocol;
 297 };
 298
 299 static const WCHAR wszFile[] = {'f','i','l','e',0};
 300 static const WCHAR wszFtp[]  = {'f','t','p',0};
 301 static const WCHAR wszGopher[]  = {'g','o','p','h','e','r',0};
 302 static const WCHAR wszHttp[] = {'h','t','t','p',0};
 303 static const WCHAR wszHttps[] = {'h','t','t','p','s',0};
 304 static const WCHAR wszMk[]   = {'m','k',0};
 305
 306 static const struct object_creation_info object_creation[] =
 307 {
 308     { &CLSID_FileProtocol,            CLASSFACTORY(&FileProtocolCF),    wszFile },
 309     { &CLSID_FtpProtocol,             CLASSFACTORY(&FtpProtocolCF),     wszFtp  },
 310     { &CLSID_GopherProtocol,          CLASSFACTORY(&GopherProtocolCF),  wszGopher },
 311     { &CLSID_HttpProtocol,            CLASSFACTORY(&HttpProtocolCF),    wszHttp },
 312     { &CLSID_HttpSProtocol,           CLASSFACTORY(&HttpSProtocolCF),   wszHttps },
 313     { &CLSID_MkProtocol,              CLASSFACTORY(&MkProtocolCF),      wszMk },
 314     { &CLSID_InternetSecurityManager, CLASSFACTORY(&SecurityManagerCF), NULL    },
 315     { &CLSID_InternetZoneManager,     CLASSFACTORY(&ZoneManagerCF),     NULL    },
 316     { &CLSID_StdURLMoniker,           CLASSFACTORY(&StdURLMonikerCF),   NULL    },
 317     { &CLSID_DeCompMimeFilter,        CLASSFACTORY(&MimeFilterCF),      NULL    }
 318 };
 319
 320 static void init_session(BOOL init)
 321 {
 322     unsigned int i;
 323
 324     for(i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++) {
 325
 326         if(object_creation[i].protocol)
 327             register_urlmon_namespace(object_creation[i].cf, object_creation[i].clsid,
 328                                       object_creation[i].protocol, init);
 329     }
 330 }
 331
 332 /*******************************************************************************
 333  * DllGetClassObject [URLMON.@]
 334  * Retrieves class object from a DLL object
 335  *
 336  * NOTES
 337  *    Docs say returns STDAPI
 338  *
 339  * PARAMS
 340  *    rclsid [I] CLSID for the class object
 341  *    riid   [I] Reference to identifier of interface for class object
 342  *    ppv    [O] Address of variable to receive interface pointer for riid
 343  *
 344  * RETURNS
 345  *    Success: S_OK
 346  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 347  *             E_UNEXPECTED
 348  */
 349
 350 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 351 {
 352     unsigned int i;
 353     HRESULT hr;
 354
 355     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 356
 357     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 358     {
 359         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 360             return IClassFactory_QueryInterface(object_creation[i].cf, riid, ppv);
 361     }
 362
 363     hr = URLMON_DllGetClassObject(rclsid, riid, ppv);
 364     if(SUCCEEDED(hr))
 365         return hr;
 366
 367     FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 368     return CLASS_E_CLASSNOTAVAILABLE;
 369 }
 370
 371 static HRESULT register_inf(BOOL doregister)
 372 {
 373     HRESULT (WINAPI *pRegInstall)(HMODULE hm, LPCSTR pszSection, const STRTABLEA* pstTable);
 374     HMODULE hAdvpack;
 375
 376     static const WCHAR wszAdvpack[] = {'a','d','v','p','a','c','k','.','d','l','l',0};
 377
 378     hAdvpack = LoadLibraryW(wszAdvpack);
 379     pRegInstall = (void *)GetProcAddress(hAdvpack, "RegInstall");
 380
 381     return pRegInstall(hProxyDll, doregister ? "RegisterDll" : "UnregisterDll", NULL);
 382 }
 383
 384 /***********************************************************************
 385  *              DllRegisterServer (URLMON.@)
 386  */
 387 HRESULT WINAPI DllRegisterServer(void)
 388 {
 389     HRESULT hr;
 390
 391     TRACE("\n");
 392
 393     hr = URLMON_DllRegisterServer();
 394     return SUCCEEDED(hr) ? register_inf(TRUE) : hr;
 395 }
 396
 397 /***********************************************************************
 398  *              DllUnregisterServer (URLMON.@)
 399  */
 400 HRESULT WINAPI DllUnregisterServer(void)
 401 {
 402     HRESULT hr;
 403
 404     TRACE("\n");
 405
 406     hr = URLMON_DllUnregisterServer();
 407     return SUCCEEDED(hr) ? register_inf(FALSE) : hr;
 408 }
 409
 410 /***********************************************************************
 411  *              DllRegisterServerEx (URLMON.@)
 412  */
 413 HRESULT WINAPI DllRegisterServerEx(void)
 414 {
 415     FIXME("(void): stub\n");
 416
 417     return E_FAIL;
 418 }
 419
 420 /**************************************************************************
 421  *                 IsValidURL (URLMON.@)
 422  *
 423  * Determines if a specified string is a valid URL.
 424  *
 425  * PARAMS
 426  *  pBC        [I] ignored, must be NULL.
 427  *  szURL      [I] string that represents the URL in question.
 428  *  dwReserved [I] reserved and must be zero.
 429  *
 430  * RETURNS
 431  *  Success: S_OK.
 432  *  Failure: S_FALSE.
 433  *  returns E_INVALIDARG if one or more of the args is invalid.
 434  *
 435  * TODO:
 436  *  test functionality against windows to see what a valid URL is.
 437  */
 438 HRESULT WINAPI IsValidURL(LPBC pBC, LPCWSTR szURL, DWORD dwReserved)
 439 {
 440     FIXME("(%p, %s, %d): stub\n", pBC, debugstr_w(szURL), dwReserved);
 441
 442     if (pBC || dwReserved || !szURL)
 443         return E_INVALIDARG;
 444
 445     return S_OK;
 446 }
 447
 448 /**************************************************************************
 449  *                 FaultInIEFeature (URLMON.@)
 450  *
 451  *  Undocumented.  Appears to be used by native shdocvw.dll.
 452  */
 453 HRESULT WINAPI FaultInIEFeature( HWND hwnd, uCLSSPEC * pClassSpec,
 454                                  QUERYCONTEXT *pQuery, DWORD flags )
 455 {
 456     FIXME("%p %p %p %08x\n", hwnd, pClassSpec, pQuery, flags);
 457     return E_NOTIMPL;
 458 }
 459
 460 /**************************************************************************
 461  *                 CoGetClassObjectFromURL (URLMON.@)
 462  */
 463 HRESULT WINAPI CoGetClassObjectFromURL( REFCLSID rclsid, LPCWSTR szCodeURL, DWORD dwFileVersionMS,
 464                                         DWORD dwFileVersionLS, LPCWSTR szContentType,
 465                                         LPBINDCTX pBindCtx, DWORD dwClsContext, LPVOID pvReserved,
 466                                         REFIID riid, LPVOID *ppv )
 467 {
 468     FIXME("(%s %s %d %d %s %p %d %p %s %p) Stub!\n", debugstr_guid(rclsid), debugstr_w(szCodeURL),
 469         dwFileVersionMS, dwFileVersionLS, debugstr_w(szContentType), pBindCtx, dwClsContext, pvReserved,
 470         debugstr_guid(riid), ppv);
 471     return E_NOINTERFACE;
 472 }
 473
 474 /***********************************************************************
 475  *           ReleaseBindInfo (URLMON.@)
 476  *
 477  * Release the resources used by the specified BINDINFO structure.
 478  *
 479  * PARAMS
 480  *  pbindinfo [I] BINDINFO to release.
 481  *
 482  * RETURNS
 483  *  Nothing.
 484  */
 485 void WINAPI ReleaseBindInfo(BINDINFO* pbindinfo)
 486 {
 487     DWORD size;
 488
 489     TRACE("(%p)\n", pbindinfo);
 490
 491     if(!pbindinfo || !(size = pbindinfo->cbSize))
 492         return;
 493
 494     CoTaskMemFree(pbindinfo->szExtraInfo);
 495     ReleaseStgMedium(&pbindinfo->stgmedData);
 496
 497     if(offsetof(BINDINFO, szExtraInfo) < size)
 498         CoTaskMemFree(pbindinfo->szCustomVerb);
 499
 500     if(pbindinfo->pUnk && offsetof(BINDINFO, pUnk) < size)
 501         IUnknown_Release(pbindinfo->pUnk);
 502
 503     memset(pbindinfo, 0, size);
 504     pbindinfo->cbSize = size;
 505 }
 506
 507 /***********************************************************************
 508  *           CopyStgMedium (URLMON.@)
 509  */
 510 HRESULT WINAPI CopyStgMedium(const STGMEDIUM *src, STGMEDIUM *dst)
 511 {
 512     TRACE("(%p %p)\n", src, dst);
 513
 514     if(!src || !dst)
 515         return E_POINTER;
 516
 517     *dst = *src;
 518
 519     switch(dst->tymed) {
 520     case TYMED_NULL:
 521         break;
 522     case TYMED_FILE:
 523         if(src->u.lpszFileName && !src->pUnkForRelease) {
 524             DWORD size = (strlenW(src->u.lpszFileName)+1)*sizeof(WCHAR);
 525             dst->u.lpszFileName = CoTaskMemAlloc(size);
 526             memcpy(dst->u.lpszFileName, src->u.lpszFileName, size);
 527         }
 528         break;
 529     case TYMED_ISTREAM:
 530         if(dst->u.pstm)
 531             IStream_AddRef(dst->u.pstm);
 532         break;
 533     case TYMED_ISTORAGE:
 534         if(dst->u.pstg)
 535             IStorage_AddRef(dst->u.pstg);
 536         break;
 537     default:
 538         FIXME("Unimplemented tymed %d\n", src->tymed);
 539     }
 540
 541     if(dst->pUnkForRelease)
 542         IUnknown_AddRef(dst->pUnkForRelease);
 543
 544     return S_OK;
 545 }
 546
 547 static BOOL text_richtext_filter(const BYTE *b, DWORD size)
 548 {
 549     return size > 5 && !memcmp(b, "{\\rtf", 5);
 550 }
 551
 552 static BOOL text_html_filter(const BYTE *b, DWORD size)
 553 {
 554     DWORD i;
 555
 556     if(size < 5)
 557         return FALSE;
 558
 559     for(i=0; i < size-5; i++) {
 560         if(b[i] == '<'
 561            && (b[i+1] == 'h' || b[i+1] == 'H')
 562            && (b[i+2] == 't' || b[i+2] == 'T')
 563            && (b[i+3] == 'm' || b[i+3] == 'M')
 564            && (b[i+4] == 'l' || b[i+4] == 'L'))
 565             return TRUE;
 566     }
 567
 568     return FALSE;
 569 }
 570
 571 static BOOL audio_basic_filter(const BYTE *b, DWORD size)
 572 {
 573     return size > 4
 574         && b[0] == '.' && b[1] == 's' && b[2] == 'n' && b[3] == 'd';
 575 }
 576
 577 static BOOL audio_wav_filter(const BYTE *b, DWORD size)
 578 {
 579     return size > 12
 580         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 581         && b[8] == 'W' && b[9] == 'A' && b[10] == 'V' && b[11] == 'E';
 582 }
 583
 584 static BOOL image_gif_filter(const BYTE *b, DWORD size)
 585 {
 586     return size >= 6
 587         && (b[0] == 'G' || b[0] == 'g')
 588         && (b[1] == 'I' || b[1] == 'i')
 589         && (b[2] == 'F' || b[2] == 'f')
 590         &&  b[3] == '8'
 591         && (b[4] == '7' || b[4] == '9')
 592         && (b[5] == 'A' || b[5] == 'a');
 593 }
 594
 595 static BOOL image_pjpeg_filter(const BYTE *b, DWORD size)
 596 {
 597     return size > 2 && b[0] == 0xff && b[1] == 0xd8;
 598 }
 599
 600 static BOOL image_tiff_filter(const BYTE *b, DWORD size)
 601 {
 602     return size > 2 && b[0] == 0x4d && b[1] == 0x4d;
 603 }
 604
 605 static BOOL image_xpng_filter(const BYTE *b, DWORD size)
 606 {
 607     static const BYTE xpng_header[] = {0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
 608     return size > sizeof(xpng_header) && !memcmp(b, xpng_header, sizeof(xpng_header));
 609 }
 610
 611 static BOOL image_bmp_filter(const BYTE *b, DWORD size)
 612 {
 613     return size >= 14
 614         && b[0] == 0x42 && b[1] == 0x4d
 615         && *(const DWORD *)(b+6) == 0;
 616 }
 617
 618 static BOOL video_avi_filter(const BYTE *b, DWORD size)
 619 {
 620     return size > 12
 621         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 622         && b[8] == 'A' && b[9] == 'V' && b[10] == 'I' && b[11] == 0x20;
 623 }
 624
 625 static BOOL video_mpeg_filter(const BYTE *b, DWORD size)
 626 {
 627     return size > 4
 628         && !b[0] && !b[1] && b[2] == 0x01
 629         && (b[3] == 0xb3 || b[3] == 0xba);
 630 }
 631
 632 static BOOL application_postscript_filter(const BYTE *b, DWORD size)
 633 {
 634     return size > 2 && b[0] == '%' && b[1] == '!';
 635 }
 636
 637 static BOOL application_pdf_filter(const BYTE *b, DWORD size)
 638 {
 639     return size > 4 && b[0] == 0x25 && b[1] == 0x50 && b[2] == 0x44 && b[3] == 0x46;
 640 }
 641
 642 static BOOL application_xzip_filter(const BYTE *b, DWORD size)
 643 {
 644     return size > 2 && b[0] == 0x50 && b[1] == 0x4b;
 645 }
 646
 647 static BOOL application_xgzip_filter(const BYTE *b, DWORD size)
 648 {
 649     return size > 2 && b[0] == 0x1f && b[1] == 0x8b;
 650 }
 651
 652 static BOOL application_java_filter(const BYTE *b, DWORD size)
 653 {
 654     return size > 4 && b[0] == 0xca && b[1] == 0xfe && b[2] == 0xba && b[3] == 0xbe;
 655 }
 656
 657 static BOOL application_xmsdownload(const BYTE *b, DWORD size)
 658 {
 659     return size > 2 && b[0] == 'M' && b[1] == 'Z';
 660 }
 661
 662 static BOOL text_plain_filter(const BYTE *b, DWORD size)
 663 {
 664     const BYTE *ptr;
 665
 666     for(ptr = b; ptr < b+size-1; ptr++) {
 667         if(*ptr < 0x20 && *ptr != '\n' && *ptr != '\r' && *ptr != '\t')
 668             return FALSE;
 669     }
 670
 671     return TRUE;
 672 }
 673
 674 static BOOL application_octet_stream_filter(const BYTE *b, DWORD size)
 675 {
 676     return TRUE;
 677 }
 678
 679 static HRESULT find_mime_from_buffer(const BYTE *buf, DWORD size, const WCHAR *proposed_mime, WCHAR **ret_mime)
 680 {
 681     LPCWSTR ret = NULL;
 682     DWORD len, i;
 683
 684     static const WCHAR text_htmlW[] = {'t','e','x','t','/','h','t','m','l',0};
 685     static const WCHAR text_richtextW[] = {'t','e','x','t','/','r','i','c','h','t','e','x','t',0};
 686     static const WCHAR audio_basicW[] = {'a','u','d','i','o','/','b','a','s','i','c',0};
 687     static const WCHAR audio_wavW[] = {'a','u','d','i','o','/','w','a','v',0};
 688     static const WCHAR image_gifW[] = {'i','m','a','g','e','/','g','i','f',0};
 689     static const WCHAR image_pjpegW[] = {'i','m','a','g','e','/','p','j','p','e','g',0};
 690     static const WCHAR image_tiffW[] = {'i','m','a','g','e','/','t','i','f','f',0};
 691     static const WCHAR image_xpngW[] = {'i','m','a','g','e','/','x','-','p','n','g',0};
 692     static const WCHAR image_bmpW[] = {'i','m','a','g','e','/','b','m','p',0};
 693     static const WCHAR video_aviW[] = {'v','i','d','e','o','/','a','v','i',0};
 694     static const WCHAR video_mpegW[] = {'v','i','d','e','o','/','m','p','e','g',0};
 695     static const WCHAR app_postscriptW[] =
 696         {'a','p','p','l','i','c','a','t','i','o','n','/','p','o','s','t','s','c','r','i','p','t',0};
 697     static const WCHAR app_pdfW[] = {'a','p','p','l','i','c','a','t','i','o','n','/','p','d','f',0};
 698     static const WCHAR app_xzipW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 699         'x','-','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 700     static const WCHAR app_xgzipW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 701         'x','-','g','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 702     static const WCHAR app_javaW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 703         'j','a','v','a',0};
 704     static const WCHAR app_xmsdownloadW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 705         'x','-','m','s','d','o','w','n','l','o','a','d',0};
 706     static const WCHAR text_plainW[] = {'t','e','x','t','/','p','l','a','i','n','\0'};
 707     static const WCHAR app_octetstreamW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 708         'o','c','t','e','t','-','s','t','r','e','a','m','\0'};
 709
 710     static const struct {
 711         LPCWSTR mime;
 712         BOOL (*filter)(const BYTE *,DWORD);
 713     } mime_filters[] = {
 714         {text_htmlW,       text_html_filter},
 715         {text_richtextW,   text_richtext_filter},
 716      /* {audio_xaiffW,     audio_xaiff_filter}, */
 717         {audio_basicW,     audio_basic_filter},
 718         {audio_wavW,       audio_wav_filter},
 719         {image_gifW,       image_gif_filter},
 720         {image_pjpegW,     image_pjpeg_filter},
 721         {image_tiffW,      image_tiff_filter},
 722         {image_xpngW,      image_xpng_filter},
 723      /* {image_xbitmapW,   image_xbitmap_filter}, */
 724         {image_bmpW,       image_bmp_filter},
 725      /* {image_xjgW,       image_xjg_filter}, */
 726      /* {image_xemfW,      image_xemf_filter}, */
 727      /* {image_xwmfW,      image_xwmf_filter}, */
 728         {video_aviW,       video_avi_filter},
 729         {video_mpegW,      video_mpeg_filter},
 730         {app_postscriptW,  application_postscript_filter},
 731      /* {app_base64W,      application_base64_filter}, */
 732      /* {app_macbinhex40W, application_macbinhex40_filter}, */
 733         {app_pdfW,         application_pdf_filter},
 734      /* {app_zcompressedW, application_xcompressed_filter}, */
 735         {app_xzipW,        application_xzip_filter},
 736         {app_xgzipW,       application_xgzip_filter},
 737         {app_javaW,        application_java_filter},
 738         {app_xmsdownloadW, application_xmsdownload},
 739         {text_plainW,      text_plain_filter},
 740         {app_octetstreamW, application_octet_stream_filter}
 741     };
 742
 743     if(!buf || !size) {
 744         if(!proposed_mime)
 745             return E_FAIL;
 746
 747         len = strlenW(proposed_mime)+1;
 748         *ret_mime = CoTaskMemAlloc(len*sizeof(WCHAR));
 749         if(!*ret_mime)
 750             return E_OUTOFMEMORY;
 751
 752         memcpy(*ret_mime, proposed_mime, len*sizeof(WCHAR));
 753         return S_OK;
 754     }
 755
 756     if(proposed_mime && strcmpW(proposed_mime, app_octetstreamW)) {
 757         for(i=0; i < sizeof(mime_filters)/sizeof(*mime_filters); i++) {
 758             if(!strcmpW(proposed_mime, mime_filters[i].mime))
 759                 break;
 760         }
 761
 762         if(i == sizeof(mime_filters)/sizeof(*mime_filters) || mime_filters[i].filter(buf, size)) {
 763             len = strlenW(proposed_mime)+1;
 764             *ret_mime = CoTaskMemAlloc(len*sizeof(WCHAR));
 765             if(!*ret_mime)
 766                 return E_OUTOFMEMORY;
 767
 768             memcpy(*ret_mime, proposed_mime, len*sizeof(WCHAR));
 769             return S_OK;
 770         }
 771     }
 772
 773     i=0;
 774     while(!ret) {
 775         if(mime_filters[i].filter(buf, size))
 776             ret = mime_filters[i].mime;
 777         i++;
 778     }
 779
 780     TRACE("found %s for %s\n", debugstr_w(ret), debugstr_an((const char*)buf, min(32, size)));
 781
 782     if(proposed_mime) {
 783         if(i == sizeof(mime_filters)/sizeof(*mime_filters))
 784             ret = proposed_mime;
 785
 786         /* text/html is a special case */
 787         if(!strcmpW(proposed_mime, text_htmlW) && !strcmpW(ret, text_plainW))
 788             ret = text_htmlW;
 789     }
 790
 791     len = strlenW(ret)+1;
 792     *ret_mime = CoTaskMemAlloc(len*sizeof(WCHAR));
 793     if(!*ret_mime)
 794         return E_OUTOFMEMORY;
 795
 796     memcpy(*ret_mime, ret, len*sizeof(WCHAR));
 797     return S_OK;
 798 }
 799
 800 /***********************************************************************
 801  *           FindMimeFromData (URLMON.@)
 802  *
 803  * Determines the Multipurpose Internet Mail Extensions (MIME) type from the data provided.
 804  */
 805 HRESULT WINAPI FindMimeFromData(LPBC pBC, LPCWSTR pwzUrl, LPVOID pBuffer,
 806         DWORD cbSize, LPCWSTR pwzMimeProposed, DWORD dwMimeFlags,
 807         LPWSTR* ppwzMimeOut, DWORD dwReserved)
 808 {
 809     TRACE("(%p,%s,%p,%d,%s,0x%x,%p,0x%x)\n", pBC, debugstr_w(pwzUrl), pBuffer, cbSize,
 810             debugstr_w(pwzMimeProposed), dwMimeFlags, ppwzMimeOut, dwReserved);
 811
 812     if(dwMimeFlags)
 813         WARN("dwMimeFlags=%08x\n", dwMimeFlags);
 814     if(dwReserved)
 815         WARN("dwReserved=%d\n", dwReserved);
 816
 817     /* pBC seams to not be used */
 818
 819     if(!ppwzMimeOut || (!pwzUrl && !pBuffer))
 820         return E_INVALIDARG;
 821
 822     if(pwzMimeProposed || pBuffer)
 823         return find_mime_from_buffer(pBuffer, cbSize, pwzMimeProposed, ppwzMimeOut);
 824
 825     if(pwzUrl) {
 826         HKEY hkey;
 827         DWORD res, size;
 828         LPCWSTR ptr;
 829         WCHAR mime[64];
 830
 831         static const WCHAR wszContentType[] =
 832                 {'C','o','n','t','e','n','t',' ','T','y','p','e','\0'};
 833
 834         ptr = strrchrW(pwzUrl, '.');
 835         if(!ptr)
 836             return E_FAIL;
 837
 838         res = RegOpenKeyW(HKEY_CLASSES_ROOT, ptr, &hkey);
 839         if(res != ERROR_SUCCESS)
 840             return HRESULT_FROM_WIN32(res);
 841
 842         size = sizeof(mime);
 843         res = RegQueryValueExW(hkey, wszContentType, NULL, NULL, (LPBYTE)mime, &size);
 844         RegCloseKey(hkey);
 845         if(res != ERROR_SUCCESS)
 846             return HRESULT_FROM_WIN32(res);
 847
 848         *ppwzMimeOut = CoTaskMemAlloc(size);
 849         memcpy(*ppwzMimeOut, mime, size);
 850         return S_OK;
 851     }
 852
 853     return E_FAIL;
 854 }
 855
 856 /***********************************************************************
 857  *           GetClassFileOrMime (URLMON.@)
 858  *
 859  * Determines the class ID from the bind context, file name or MIME type.
 860  */
 861 HRESULT WINAPI GetClassFileOrMime(LPBC pBC, LPCWSTR pszFilename,
 862         LPVOID pBuffer, DWORD cbBuffer, LPCWSTR pszMimeType, DWORD dwReserved,
 863         CLSID *pclsid)
 864 {
 865     FIXME("(%p, %s, %p, %d, %p, 0x%08x, %p): stub\n", pBC,
 866         debugstr_w(pszFilename), pBuffer, cbBuffer, debugstr_w(pszMimeType),
 867         dwReserved, pclsid);
 868     return E_NOTIMPL;
 869 }
 870
 871 /***********************************************************************
 872  * Extract (URLMON.@)
 873  */
 874 HRESULT WINAPI Extract(void *dest, LPCSTR szCabName)
 875 {
 876     HRESULT (WINAPI *pExtract)(void *, LPCSTR);
 877
 878     if (!hCabinet)
 879         hCabinet = LoadLibraryA("cabinet.dll");
 880
 881     if (!hCabinet) return HRESULT_FROM_WIN32(GetLastError());
 882     pExtract = (void *)GetProcAddress(hCabinet, "Extract");
 883     if (!pExtract) return HRESULT_FROM_WIN32(GetLastError());
 884
 885     return pExtract(dest, szCabName);
 886 }
 887
 888 /***********************************************************************
 889  *           IsLoggingEnabledA (URLMON.@)
 890  */
 891 BOOL WINAPI IsLoggingEnabledA(LPCSTR url)
 892 {
 893     FIXME("(%s)\n", debugstr_a(url));
 894     return FALSE;
 895 }
 896
 897 /***********************************************************************
 898  *           IsLoggingEnabledW (URLMON.@)
 899  */
 900 BOOL WINAPI IsLoggingEnabledW(LPCWSTR url)
 901 {
 902     FIXME("(%s)\n", debugstr_w(url));
 903     return FALSE;
 904 }
 905
 906 /***********************************************************************
 907  *           URLMON_410 (URLMON.410)
 908  *    Undocumented, added in IE8
 909  */
 910 BOOL WINAPI URLMON_410(DWORD unknown1, DWORD unknown2)
 911 {
 912     FIXME("stub: %d %d\n", unknown1, unknown2);
 913     return FALSE;
 914 }
 915
 916 /***********************************************************************
 917  *           URLMON_423 (URLMON.423)
 918  *    Undocumented, added in IE8
 919  */
 920 BOOL WINAPI URLMON_423(DWORD unknown1, DWORD unknown2, DWORD unknown3, DWORD unknown4)
 921 {
 922     FIXME("stub: %d %d %d %d\n", unknown1, unknown2, unknown3, unknown4);
 923     return FALSE;
 924 }